Consuming over a pound of sweet potatoes daily is needed to meet the RDA for vitamin A, compared to a few grams of liver.

“if you do the conversion for this and you click you look at the rda the recommended daily allowance vitamin a in humans and you want to get that from plant foods the most rich plant food and beta-carotene of sweet potatoes for most individuals you would have to eat about a pound of sweet potatoes a day to get the rda for vitamin a assuming that you don't have bcumo polymorphisms that prevent you from making this conversion in the first place”

“that sweet potatoes were the the highest source of beta carotene in the plant kingdom and you would have to eat I think it was over a pound of sweet potatoes per day to get the RDA for vitamin A equivalent that you could get in like maybe a few grams of liver”